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<pre><span class="sourceLineNo">001</span>package org.teapot.db.orm.util.keybreakmany;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import org.teapot.db.orm.IKeyValue;<a name="line.3"></a>
<span class="sourceLineNo">004</span><a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.util.Comparator;<a name="line.5"></a>
<span class="sourceLineNo">006</span><a name="line.6"></a>
<span class="sourceLineNo">007</span>/**<a name="line.7"></a>
<span class="sourceLineNo">008</span> *  This wrapper class takes care of comparing Non-String values.<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> */<a name="line.10"></a>
<span class="sourceLineNo">011</span>public class WrappingComparator&lt;T&gt; implements Comparator&lt;T&gt; {<a name="line.11"></a>
<span class="sourceLineNo">012</span>  private String[] sortKeys = null;<a name="line.12"></a>
<span class="sourceLineNo">013</span>  private int total = 0;<a name="line.13"></a>
<span class="sourceLineNo">014</span><a name="line.14"></a>
<span class="sourceLineNo">015</span>  public WrappingComparator() {<a name="line.15"></a>
<span class="sourceLineNo">016</span>  }<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>  public WrappingComparator(String[] sortKeys, int total) {<a name="line.18"></a>
<span class="sourceLineNo">019</span>    this.sortKeys = sortKeys;<a name="line.19"></a>
<span class="sourceLineNo">020</span>    this.total = total;<a name="line.20"></a>
<span class="sourceLineNo">021</span>  }<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span>  protected void setSortKeys(String[]  sortKeys) {<a name="line.23"></a>
<span class="sourceLineNo">024</span>    this.sortKeys = sortKeys;<a name="line.24"></a>
<span class="sourceLineNo">025</span>  }<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>  protected String[] getSortKeys() {<a name="line.27"></a>
<span class="sourceLineNo">028</span>    return this.sortKeys;<a name="line.28"></a>
<span class="sourceLineNo">029</span>  }<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>  /**<a name="line.31"></a>
<span class="sourceLineNo">032</span>   * compare.<a name="line.32"></a>
<span class="sourceLineNo">033</span>   *  Use &lt;code&gt;Comparable&lt;/code&gt; interface through ITypeCheckSortable<a name="line.33"></a>
<span class="sourceLineNo">034</span>   *  instead of &lt;code&gt;String&lt;/code&gt; class through IRetailSortable.<a name="line.34"></a>
<span class="sourceLineNo">035</span>   *  [Warning!][Critical Assumption]<a name="line.35"></a>
<span class="sourceLineNo">036</span>   *   1. A class implementing IRetailSortable also implements<a name="line.36"></a>
<span class="sourceLineNo">037</span>   *      ITypeCheckSortable like OM classes.<a name="line.37"></a>
<span class="sourceLineNo">038</span>   *   2. A target object implements &lt;code&gt;Comparable&lt;/code&gt; interface.<a name="line.38"></a>
<span class="sourceLineNo">039</span>   *<a name="line.39"></a>
<span class="sourceLineNo">040</span>   */<a name="line.40"></a>
<span class="sourceLineNo">041</span>  @SuppressWarnings({ "unchecked", "rawtypes" })<a name="line.41"></a>
<span class="sourceLineNo">042</span>  public int compare(Object o1, Object o2) {<a name="line.42"></a>
<span class="sourceLineNo">043</span>    System.out.println(this.total);<a name="line.43"></a>
<span class="sourceLineNo">044</span>    IWrapper w1 = (IWrapper) o1;<a name="line.44"></a>
<span class="sourceLineNo">045</span>    IWrapper w2 = (IWrapper) o2;<a name="line.45"></a>
<span class="sourceLineNo">046</span><a name="line.46"></a>
<span class="sourceLineNo">047</span>    /*<a name="line.47"></a>
<span class="sourceLineNo">048</span>     * To share this comparator with non-String value<a name="line.48"></a>
<span class="sourceLineNo">049</span>     * the following cast becomes deprecated.<a name="line.49"></a>
<span class="sourceLineNo">050</span>     *<a name="line.50"></a>
<span class="sourceLineNo">051</span>     */<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>    IKeyValue r1;<a name="line.53"></a>
<span class="sourceLineNo">054</span>    IKeyValue r2;<a name="line.54"></a>
<span class="sourceLineNo">055</span>    try {<a name="line.55"></a>
<span class="sourceLineNo">056</span>      r1 = (IKeyValue) w1.getNaked();<a name="line.56"></a>
<span class="sourceLineNo">057</span>      r2 = (IKeyValue) w2.getNaked();<a name="line.57"></a>
<span class="sourceLineNo">058</span>    } catch ( ClassCastException cce ) {<a name="line.58"></a>
<span class="sourceLineNo">059</span>      //System.out.println("[WrappingComparator][INFO] "<a name="line.59"></a>
<span class="sourceLineNo">060</span>      //+ w1.getNaked().getClass().getName() + " does NOT implement ITypeCheckSortable.");<a name="line.60"></a>
<span class="sourceLineNo">061</span>      return compare( w1, w2 );<a name="line.61"></a>
<span class="sourceLineNo">062</span>    }<a name="line.62"></a>
<span class="sourceLineNo">063</span>    int idxw1 = w1.getIndex();<a name="line.63"></a>
<span class="sourceLineNo">064</span>    int idxw2 = w2.getIndex();<a name="line.64"></a>
<span class="sourceLineNo">065</span><a name="line.65"></a>
<span class="sourceLineNo">066</span>    int comp = 0;<a name="line.66"></a>
<span class="sourceLineNo">067</span>    // Examine sort(break) keys fileds first<a name="line.67"></a>
<span class="sourceLineNo">068</span>    for (int i = 0; i &lt; (this.sortKeys.length / this.total); i ++) {<a name="line.68"></a>
<span class="sourceLineNo">069</span>      System.out.print(i + "," + idxw1 + "," + r1 + "," + sortKeys[i * this.total + idxw1 + 1]);<a name="line.69"></a>
<span class="sourceLineNo">070</span>      System.out.println("&lt;=&gt;" + i + "," + idxw2 + "," + r2 + ","<a name="line.70"></a>
<span class="sourceLineNo">071</span>          + sortKeys[i * this.total + idxw2 + 1]);<a name="line.71"></a>
<span class="sourceLineNo">072</span>      Comparable c1 = (Comparable) r1.get(sortKeys[i * this.total + idxw1 + 1]);<a name="line.72"></a>
<span class="sourceLineNo">073</span>      Comparable c2 = (Comparable) r2.get(sortKeys[i * this.total + idxw2 + 1]);<a name="line.73"></a>
<span class="sourceLineNo">074</span><a name="line.74"></a>
<span class="sourceLineNo">075</span>      comp = c1.compareTo( c2 );<a name="line.75"></a>
<span class="sourceLineNo">076</span>      if  (comp !=  0) {<a name="line.76"></a>
<span class="sourceLineNo">077</span>        return comp;<a name="line.77"></a>
<span class="sourceLineNo">078</span>      }<a name="line.78"></a>
<span class="sourceLineNo">079</span>    }<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span>    // Then compare the order of lists given<a name="line.81"></a>
<span class="sourceLineNo">082</span>    return w1.getIndex() - w2.getIndex();<a name="line.82"></a>
<span class="sourceLineNo">083</span>  }<a name="line.83"></a>
<span class="sourceLineNo">084</span><a name="line.84"></a>
<span class="sourceLineNo">085</span>  /**<a name="line.85"></a>
<span class="sourceLineNo">086</span>   * For Classes, which implemnent only &lt;code&gt;IRetailSortable&lt;/code&gt;.<a name="line.86"></a>
<span class="sourceLineNo">087</span>   * @param w1 IWrapper<a name="line.87"></a>
<span class="sourceLineNo">088</span>   * @param w2 IWrapper<a name="line.88"></a>
<span class="sourceLineNo">089</span>   * @return int<a name="line.89"></a>
<span class="sourceLineNo">090</span>   */<a name="line.90"></a>
<span class="sourceLineNo">091</span>  @SuppressWarnings({ "rawtypes", "unchecked" })<a name="line.91"></a>
<span class="sourceLineNo">092</span>  private int compare(IWrapper w1, IWrapper w2) {<a name="line.92"></a>
<span class="sourceLineNo">093</span>    IKeyValue  r1 = (IKeyValue)w1.getNaked();<a name="line.93"></a>
<span class="sourceLineNo">094</span>    IKeyValue  r2 = (IKeyValue)w2.getNaked();<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>    int comp = 0;<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>    // Examine sort(break) keys fileds first<a name="line.98"></a>
<span class="sourceLineNo">099</span>    for (int i = 0; i &lt; sortKeys.length; i ++) {<a name="line.99"></a>
<span class="sourceLineNo">100</span>      Comparable c1 = (Comparable) r1.get((String)sortKeys[i]);<a name="line.100"></a>
<span class="sourceLineNo">101</span>      Comparable c2 = (Comparable) r2.get((String)sortKeys[i]);<a name="line.101"></a>
<span class="sourceLineNo">102</span><a name="line.102"></a>
<span class="sourceLineNo">103</span>      comp = c1.compareTo( c2 );<a name="line.103"></a>
<span class="sourceLineNo">104</span>      if  (comp !=  0) {<a name="line.104"></a>
<span class="sourceLineNo">105</span>        return comp;<a name="line.105"></a>
<span class="sourceLineNo">106</span>      }<a name="line.106"></a>
<span class="sourceLineNo">107</span>    }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>    // Then compare the order of lists given<a name="line.109"></a>
<span class="sourceLineNo">110</span>    return w1.getIndex() - w2.getIndex();<a name="line.110"></a>
<span class="sourceLineNo">111</span>  }<a name="line.111"></a>
<span class="sourceLineNo">112</span>}<a name="line.112"></a>




























































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